Door-operating lever.



H. CRANE.

DOOR OPERATING LEVER.

APPLICATION HLED AUG-16. 1911.

Patented Nov. 12, 1918,

vgxgx HERBERT W. CRANE, OF CHICAGO, ILLINOIS.

DOOR-OPERATING LEVER.

Specification of Letters Patent. Patented Nov. 12 1918.

Application filed August 16, 1917. Serial No. 186,519.

To all whom it may concern:

Be it known that I, Hnnenn'r W. CRANE, a citizen of the United States,and resident of Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Door OperatingLevers, of which the following is a specification.

My invention relates to door opening devices and particularly to a novelbracket for use in connection therewith.

My improvement is intended primarily for application to swinging doors.One of the principal objects is to provide means for securing therequisite leverage for bringing the door to fully closed position. Thishas been accomplished heretofore by the provision of a projectingbracket secured to the door. The objection to this has been that thedoor could not be fully opened in 'a 90 space because of the projectingbracket. In the construction herein proposed the requisite leverage issecured for bringing the door to a closed position and the bracket isarticulated and assumes a collapsed position. In order to accomplish thedesired result the bracket is formed of two members or struts, the innerends of which are fulcrumed on the door and frame respectively, theirouter ends being pivotally joined. The rack bar is connected at a pointintermediate the ends of the strut which is connected to the door. Whenthe door has been swung"90, the bracket will assume a different positionin which the member connected to the door lies substantially parallel tothe door.

A further object is to provide means for connecting an actuating bar tothe bracket in such manner that there will be a very slight angularmovement of the bar in its travel. This is essential where the bar is inrhe form'of a rack actuated by a motor pinion.

The invention will be more readily understood by referenc to theaccompanying drawing, wherein,

Figure l is a plan View partly in section showing the device inoperative position on a door, and,

Fig. 2 is a front elevation thereof.

In the drawings the door frame is indicated at 10, and two swingingdoors at 11, 12. A motor 13, is mounted at the meeting edges of thedoors and at a point thereabove. Two rackbars 14, 15, are operathe twolinks being pivotally joined at 21.

. The position of the parts when the 'door is in open position is shownin dotted'lines in Fig. 1. In that position it will beseen that the rackbar is in substantially the same straight lines as when the door is inclosed position. The path of travel of the end of the rack bar from theopen to the closed position of the door. is indicated by the curveddotted line 22. It will be seen that there is comparatively littleangular movement of the rack bar even at that distance from theactuating pinion and therefore that there will be no interference withthe operation of the motor. By reason of the arrangement shown it willbe seen that the door may be opened against a .wall arranged at 90 tothe door when in closed position. This is important in garages which arefrequently so designedthat the door is set deeply in the building andswings against a 90 wall.

While the construction is shown in connection with double swinging doorsit 'may be used with equal facility for single doors and may be arrangedin other manners than that shown. Modifications in the arrangement aretherefore considered .tobe covered herein.

I claim:

1. In door operating means, the combination with the door and casing, ofan articulated bracket mounted on the side toward which the door opens,one bracket member being fulcrumed to the casing at a point inside ofthe hinge for the door, an other bracket member being fulcrumed on thedoor at a point substantially midway of its width, and an actuating barconnected to the last named member intermediate of its ends, the twobracket members being of substantially equal length and being pivotallyjoined at their outer extremities, substantially as described.

2. In means for actuating swinging doors, the combination with the doorand casing, of a bracket mounted on the side toward which the door opensand formed of two links of substantially equal length pivotally joinedat one end, one of said links being fulcrumed to the casing ata point asubstantial distance inward from the door hinge, the other link beingfulorunied on the door at a point a further distance in-. ward of thehinge whereby when the door is in closed position the links project awa;from the door, and an operating member connected to the last named linkat a point intermediate of its ends, the arrangement being such that asthe door is opened at an angle of 90 to its original position, the lastnamed link will lie substantially parallel to the door, substantially asdescribed.

3. In means for operating doors, the coinbinetion with a swinging dooradapted to he opened 90 against an adjacent wall, of

a bracket mounted on the side toward which the door opens and composedof two links of substantially equal length pivoted together, the freeend of one link being t'ulclaimed to a support at a point a distancefrom the adjacent wall substantially equal to the length of the link,the other link being fulcruined on the door at a point substantiallymidway of the width thereof, and an operating har connected to the lastnamed link at a point intermediate the ends thereof, substantially asdescribed.

igned at @hicago, llh. this llth day of August, 1911.

HERBERT W. CRi-XNE.

Witness in. d. CHASE.

